Negative Ec/Io

[dekili]

i never said it was the case. But what is the log(1/1)=?

log (Ec/Io) or log (C/(I+N))
log (1/1)=0
log (1/0)=infinitive...

There is a difference if you have log or abs value. Just to be precise because of others who are using information from this thread...

[linuxxcso]

Eb: Scrambling code energy per bit.
Ec: Scrambling code energy per chip.
Es: Scrambling code energy per chip (as measured by a scanning device during the SCH timeslot scan).
No: Total energy per chip (as measured by a UE).
Io: Total energy per chip (as measured by a scanning device).
Ec/No: Signal-to-noise ratio (as measured by a UE). See 3GPP 25.215, section 5.1.5. Compare No above.
Ec/Io: Signal-to-noise ratio (as measured by a scanning device). Compare Io above.
SIR: Signal-to-interference ratio as measured on the DPCCH. See 3GPP 25.215, section 5.2.2.
RSCP: Received signal code power, identical with Ec: see 3GPP 25.215, section 5.1.5.
RSSI: Received signal strength indicator, identical with No: see 3GPP 25.215, section 5.1.5.
maybe help